/***************************************************************************
 *   Copyright (C) 2009 by umbacos@gmail.com                               *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "udm-common.h"

int fork2() {
	pid_t pid;
	int rc;
	int status;

	if ( ! ( pid = fork() ) ) {
		switch ( fork() ) {
			case 0:
				return 0;
			case -1:
				_exit ( errno );
			default:
				_exit ( 0 );
		}
	}

	if ( pid < 0 || waitpid ( pid, &status, 0 ) < 0 )
		return -1;

	if ( WIFEXITED ( status ) )
		if ( WEXITSTATUS ( status ) == 0 )
			return 1;
		else
			errno = WEXITSTATUS ( status );
	else
		errno = EINTR;  /* well, sort of :-) */

	return -1;
}
